{"product_id":"pepperl-fuchs-kfd2-sr2-ex1-w-switch-amplifier","title":"Pepperl+Fuchs KFD2-SR2-Ex1.W – Switch Amplifier","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eThe Pepperl+Fuchs KFD2-SR2-Ex1.W is a 1-channel isolated barrier switch amplifier for transferring digital signals from hazardous areas to the safe area. It accepts a NAMUR sensor or dry contact on its intrinsically safe input and switches a relay contact output, keeping input, output and supply circuits galvanically isolated with reinforced insulation.\u003c\/p\u003e\n\u003cp\u003ePart of the K-System, the module runs from 24 V DC via the Power Rail or terminals. Line fault detection, a reversible mode of operation selected by DIP switch and suitability up to SIL 2 (SC 3) to IEC\/EN 61508 make it well suited to single-point switching duties such as limit switches, level switches and valve position feedback.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Pepperl+Fuchs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e KFD2-SR2-Ex1.W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Switch Amplifier\u003c\/li\u003e\n\u003cli\u003e1-channel isolated barrier with relay contact output\u003c\/li\u003e\n\u003cli\u003eInput for NAMUR sensors or dry contacts\u003c\/li\u003e\n\u003cli\u003e24 V DC supply via Power Rail or terminals\u003c\/li\u003e\n\u003cli\u003eLine fault detection (LFD)\u003c\/li\u003e\n\u003cli\u003eReversible mode of operation via DIP switch\u003c\/li\u003e\n\u003cli\u003eUp to SIL 2 (SC 3) to IEC\/EN 61508\u003c\/li\u003e\n\u003cli\u003eATEX and IECEx certified [Ex ia] input\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable style=\"width:100%;border-collapse:collapse;margin:0 0 1rem\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003eManufacturer\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003ePepperl+Fuchs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003ePart number\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003eKFD2-SR2-Ex1.W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003eProduct type\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003e1-channel isolated barrier \/ switch amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003eSignal type\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003eDigital input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003eRated supply voltage\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003e19 … 30 V DC (Power Rail or terminals 14+, 15-)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003eRated current\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003e≤ 35 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003ePower dissipation\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003e≤ 0.7 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003eInput\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003eNAMUR to EN 60947-5-6 or dry contact (terminals 1+, 2+, 3-)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003eSwitching point \/ hysteresis\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003e1.2 … 2.1 mA \/ approx. 0.2 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003eLine fault detection\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003eBreakage I ≤ 0.1 mA, short circuit I \u0026gt; 6 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003eOutput\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003e1 × relay (terminals 7, 8, 9)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003eContact loading\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003e250 V AC \/ 2 A \/ cos φ \u0026gt; 0.75; 40 V DC \/ 2 A resistive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003eSwitching frequency\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003e\u0026lt; 10 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003eFunctional safety\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003eSIL 2, SC 3 (IEC\/EN 61508)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003eAmbient temperature\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003e-40 … 70 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003eDegree of protection\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003eDimensions\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003e20 x 119 x 115 mm (W x H x D), housing type B2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003eMass\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003eapprox. 150 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003eMounting\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003e35 mm DIN mounting rail (EN 60715)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003eATEX\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003ePTB 00 ATEX 2080 — II (1)G [Ex ia Ga] IIC, II (1)D [Ex ia Da] IIIC, I (M1) [Ex ia Ma] I; TÜV 99 ATEX 1493 X — II 3G Ex ec nC IIC T4 Gc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003eIECEx\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003eIECEx PTB 11.0034, IECEx TUN 19.0013X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"border:1px solid rgba(0,0,0,.12);text-align:left;width:38%;padding:.6rem .9rem;vertical-align:top\"\u003eOther approvals\u003c\/th\u003e\n\u003ctd style=\"border:1px solid rgba(0,0,0,.12);padding:.6rem .9rem;vertical-align:top\"\u003eFM (FM19US0207X), UL\/cULus (E106378)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003cp\u003e\u003cem\u003eSpecifications are taken from Pepperl+Fuchs manufacturer data. Always confirm critical values — particularly hazardous-area and functional-safety data — against the current datasheet, certificates and instruction manual before installation.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSingle limit switch or proximity sensor signals from Ex zones\u003c\/li\u003e\n\u003cli\u003eValve open\/closed position indication\u003c\/li\u003e\n\u003cli\u003eLevel switch alarms to PLC and DCS inputs\u003c\/li\u003e\n\u003cli\u003eSIL 2 safety loops\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation and Compatibility\u003c\/h2\u003e\u003cp\u003eDIN rail mounting with 24 V DC supplied from the Power Rail or terminals 14+\/15-. Connect the field device to terminals 1+, 2+, 3- and the relay output to terminals 7, 8, 9. Configure mode of operation and line fault detection with the front DIP switches. Observe the ATEX\/IECEx certificate and instruction manual for intrinsically safe loop design.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is the Pepperl+Fuchs KFD2-SR2-Ex1.W?\u003c\/h3\u003e\u003cp\u003eThe Pepperl+Fuchs KFD2-SR2-Ex1.W is a 1-channel isolated barrier switch amplifier for transferring digital signals from hazardous areas to the safe area. It accepts a NAMUR sensor or dry contact on its intrinsically safe input and switches a relay contact output, keeping input, output and supply circuits galvanically isolated with reinforced insulation.\u003c\/p\u003e\n\u003ch3\u003eWhat supply does the KFD2-SR2-Ex1.W need?\u003c\/h3\u003e\u003cp\u003e19 … 30 V DC (Power Rail or terminals 14+, 15-).\u003c\/p\u003e\n\u003ch3\u003eHow do I get a price for the KFD2-SR2-Ex1.W?\u003c\/h3\u003e\u003cp\u003eThis product is sold on a price on availability basis. Use the \u003ca href=\"#poa-enquiry\"\u003eenquiry form\u003c\/a\u003e on this page with your quantity and application details and the Valves UK team will reply with pricing and lead time.\u003c\/p\u003e\n\u003ch2\u003eTechnical Documentation\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/files.pepperl-fuchs.com\/webcat\/navi\/productInfo\/pds\/70101737_eng.pdf\" target=\"_blank\" rel=\"noopener\"\u003ePepperl+Fuchs KFD2-SR2-Ex1.W datasheet (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.pepperl-fuchs.com\/en\/products-gp25581\/95424\" target=\"_blank\" rel=\"noopener\"\u003eKFD2-SR2-Ex1.W on the Pepperl+Fuchs website\u003c\/a\u003e (certificates, manuals and drawings)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eRelated Products\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pepperl-fuchs-kfd2-sr2-ex2-w-isolated-barrier\"\u003ePepperl+Fuchs KFD2-SR2-Ex2.W – Isolated Barrier Switch Amplifier\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pepperl-fuchs-kfa5-sr2-ex1-w-switch-amplifier-115v-ac\"\u003ePepperl+Fuchs KFA5-SR2-Ex1.W – Switch Amplifier (115 V AC)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/pepperl-fuchs\"\u003eView the full Pepperl+Fuchs range at Valves UK\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePrice and Availability\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePrice on Availability (POA)\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eContact Valves UK for pricing, product availability and technical enquiries regarding the Pepperl+Fuchs KFD2-SR2-Ex1.W. Please include your required quantity and any relevant application details when submitting your enquiry.\u003c\/p\u003e","brand":"Pepperl+Fuchs","offers":[{"title":"Default Title","offer_id":60161071513925,"sku":"KFD2-SR2-Ex1.W","price":0.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0956\/5542\/8421\/files\/pepperl-fuchs-kfd2-sr2-ex1-w-switch-amplifier.jpg?v=1794323888","url":"https:\/\/valvesuk.com\/products\/pepperl-fuchs-kfd2-sr2-ex1-w-switch-amplifier","provider":"Valves UK","version":"1.0","type":"link"}